I spent a few months internship with a weaver producing fine mens silk suiting for the Paris runways, I spent much of my time inspecting and repairing the fabric, you would think I would remember "burling"

Burling--Removal of loose threads, knots, slubs, burs, and other extraneous materials from fabrics by means of a burling iron, a tupe of tweezer. the trick is to remove the imprity without damaging the fabric.